.....
<h:form id="form1">
 	....
 	<a4j:commandButton value="Usual Way" reRender="infoBlock, infoBlock2" />
 	<a4j:commandButton value="Shortcut" reRender=":infoBlockl,:sv:infoBlock2" />
	.....
</h:form>
<h:panelGrid id="infoBlock">
	.....
</h:panelGrid>
.....
<f:subview id="sv">
	<h:panelGrid id="infoBlock2">
	.....
	</h:panelGrid>
	.....
</f:subview>